Primer for small-arms ammunition



' release.

CDHUPAINY, F CINEHJNATL 011310,

EEIMIEB F63 $FAEELL- Be it known that I, HARLEY T. Peon, a

- citizen of the United States, residing at Lebsome purposes quay be used:

anon, in the county of lVarren and State or Ohio, have invented certain new and useful Improvements in Primers for Small-Arms Ammunition, of which the following is specification. i

This invention relates to a. priming composition for ammunition and has for its object the provision of a substance of the class named which shall be of improved composition and elliciency.

- The invention is exemplified in the composition of material described in the following specification and it is more particularly pointed out in the appended claims.

A priming composition Inadeaccording to the present invention has pronounced qualities of sensitiveness, freedom from fouling in the barrel of the fire-arm, improved quali' ties of ignition with propellants, and in creased uniformity of all ballistic qualities. It will function in a more uniform manner than priming compositions heretofore known and is more independent of variations which may exist Within the primer or cartridge in which it is used.

In a center-fire or rim-tire primer made according to one embodiment of the present invention the combination of substances used to produce a primer of improved sensi tiveness contains a sulpho-cyanate, trinitro-resorcinol, an oxidizing agent, and mercury fulminate. When these substances are mixed together there is a slight lout complicated chemical reaction which I consider v responsible for the improved properties de scribed above. The following proportions are given by Way of an example of a composition containing these substances:

5% by Weight of tri-nitro-resorcinol,

5% by Weight of lead sulpho-cyanate,

i075 by Weight of mercury iulminate,

% by Weight of potassium chlorate. The proportions of the materials may be varied to meet different requirements. For the following proportions 15% by Weight of tri-nitro-resorcinol, 20% by weight on lead sulphowyanate,

Specification of Letters Patent.

2"; cw .2: A53 is.

Fat

1921. serial no. 15% by Weight of mercury :tuhninate, 50% by Weight of potassium chlorate Run-lire cartridges in general reizuire somewhat different type of composition from center-fire, and for such cartridges aorasive substance, such as ground emery or term-silicon, may ad composition. A suitable composi Jon rim-fire cartridges may contain:

30% mercury fulininate,

10% lead sulpho-cyanate,

10% tri-uitro-resorcinoi,

20% potassium chlorate,

30% ground gla In place lead sulpho-cyanate some o suitable cyanate, such copper solo cyanate may be substituted.

instead of potassium chlorate another oxidizing agent, such as potassium pewhlocate, barium nitrate, barium psro other oxidizing substances, may he Instead of mercury 'lulminate,other suitable detonating explosives, such es normal lead tri-nitro resorcinol, one of the or anic diazo compounds, or di-pluinhic di-trl-n resorcinol or some detonating nit'ro com pound such as tri-nitro toluene, trini'*o nitra-anilid or tri-nitro methyl nitra-anii d, may he used.

The priming; compositions of the present invention may be mixed and introdiuied into the primer cup or rim-tire shell in the usual manners well known to those skilled in the art.

I claim 1. A priming composition uitro-resorcinol,. a sulphe-cyana dicing agent and mercury iulminate.

2. r priming composition contain containing trian oxilng'; u nitro-resorcinol, lead sulptm cyanate, oxidizmg agent and mercury tulminate.

lead. sulpho-eyanate, potas- 

